405049069 has 4 divisors (see below), whose sum is σ = 418115200. Its totient is φ = 391982940.

The previous prime is 405049033. The next prime is 405049079. The reversal of 405049069 is 960940504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405049069 - 2¹¹ = 405047021 is a prime.

It is a super-2 number, since 2×405049069² = 328129496595533522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405049079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6533019 + ... + 6533080.

It is an arithmetic number, because the mean of its divisors is an integer number (104528800).

Almost surely, 2^405049069 is an apocalyptic number.

It is an amenable number.

405049069 is a deficient number, since it is larger than the sum of its proper divisors (13066131).

405049069 is a wasteful number, since it uses less digits than its factorization.

405049069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13066130.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 405049069 is about 20125.8308896801. The cubic root of 405049069 is about 739.8935012308.

The spelling of 405049069 in words is "four hundred five million, forty-nine thousand, sixty-nine".